10-2x=1.75÷210-2x=0.8752x=10-0.8752x=9.125x=4.5625
2(10-2x)=1.7520-4x=1.75等式两边同减去20-4x=1.75-20-4x=-18.25等式两边同除以-4x=4.5625
2(10-2x)=1.75 2(10-2x)=7/410-2x=7/82x=10-7/8x=5-7/16x=(80-70/16x=73/16=4.5625